Ventilation of water-closet pans



s.R. HABAULT.

VENTILATION 0F WATER CLOSET FANS June 21, 1927.

Filed Jury 1'?. 1924 2 Sheets-Sheet l 'ml y Hi Fig' 1 June 21, 1927,

S. R. HABAULT VENTILATION OF WATER CLOSET PANS Filed July 1'7. 1924 2 Sheets-Sheet 2 Patented June 2l, 1927.

UNITED ySTATES PATENT oFFlcE.;

y SYLVAIN REN IIABAUILT, or NnUILLY-sUR-SEINE, FRANCE, AssIGNoR 'ro SOCIETE DIIYGIENE rmi'rIQUa,` oF PARIS, Fia-ANGE, A CORPORATION orsi-LANCE.

VENTILATIONOF WATER-CLOSET PANS. l

Application filed July 17, 1924, Serial No. 726,490, and n Belgium July .27, 1923.

kThe present invention has for its subject a .device for effecting automat-ic internal ventilation of the pans of water closets after use by using an adjustable suction action which effects the discharge of the gases formed in the pan into the siphon itself or Fig. 1 shows a side elevation of a closetr pan provide'dwith a circular water supply.

Fig. 2 isa plan of this pan.

Fig. 3 is a section7 to a larger scale, on the line AWB of Fig. 2.

Fig. 4 is a` vertical section, to a` larger scale on the line C-D of Fig. 2.

As will be seen from the drawings the pan `1 is provided with a hollow boss 2 of suitable shape and dimensions moulded integrally with the body of the pan and disposed below the annular orifice 3 for the .supply of water to the pan. The outer face of the boss 2 is provided with a hole v4 through which is passed a tube 5 secured to the boss by means of a nuto la washer 7 ensures a fluid-tight joint. vAsecond bos-s 8, also moulded with the body of the pan 1, has a hole 9 extending the whole height thereof into which is fitted a calibrated tube 9 to the lower part of which is secured a shortv fitting 1-0 into which is fitted a tube 11, a Huid-tight joint being formed by a washer at 12. A fitting 13 connects to the tube 11 another tube 14 of which the end is connected by a portion of reduced section 15 to a tube of larger diameter 16 which leads into the Siphon 1 The fitting 13 is connected to the tubes 11 and 14 by means of nuts 18 and packing washers 19, 19. In the tube9, forming the body of a pump, is adapted to move a piston 2O of which the rod 20 is tted at its lower end with a valve 21 adapted to co-operate with a seat 22 rovided in the interior of the fitting 13. spring 23 normally holds the valve 21 against its seat. A tube 24, leading from the Water supply pipe which conducts the water `from the of directly.

cistern, terminates in the pipe 11 above the valve 22. After having passed through the first boss 2, the tube 5 passes into the tube 16 at the level of the orifice of the portion 15.v

` the drawings is as follows.

lVhen pressure is' exerted upon the seat 25 after: it has been lowered the projection 26 pushes the rod downwards thus removing the valve 21 from its seat 22. The water under Ypressure which normally fills the tubes 24 and 11, passes into'the tube 14 and by reason of the reduced portion 15 enters the tube 16 opposite the orifice of the tuber 5 at a 'high speed. ter a vacuum which produces a suction in the pan 1 through the boss 2. As soon as the pressure on the seat is relieved the spring 23 produces an upward movement of the piston 2O and thus closesthevalve 21.

The inner vwalls of the suction orifice formed by the boss 2.a.re rigorously tangen-V It thus produces in the lat-y tial to the inner edge of the pan, the. appliv cant having found by experiment thatthis shape is the most favourable for the efficient operation of the apparatus.

The adjustment of the vacuum in the tube 5 may be vobtained by any suitable means for example by means of a valve disposed in the pipe 24 before this enters the tube 11.

I f It will be understood4 that the invention is not limited to the method of construction above described and that the device maybe orificev instead `ofbeing below this. kMores over the various tubes which are used in the construction of the device may be moulded in the body of the pan instead of being attached separately thereto. The device producing the vacuum may also be connected indirectly to the main water supply instead Finally its operation need not be automatic. l

The device forming the subject of the present invention permits of effecting, automatically or non-automatically, a complete discharge of the gases from the pan, these gases being ydischarged kby the water into the Siphon of the apparatus. Thisventilation of the pan is independent ot the water discharggfeI with Which it may be formd simultaneously at the start.

bis

Having thus described my invention what I claim asnew and desire to secure `by Letters Patentis A l. In a device `for effecting the automatic internal ventilation of a closet pan, the combinatioii with a pan havingr a SiphonV in thebottom thereof; ofl an aperture boss integral with the top of said pan,` the innenwalls ot' said boss being `arranged tangentially to the inner sui-taceiof the pan, an outlet'pipe connectedV to said boss and Siphon, a valve casing, a normally `closed `valve therein, means tol open said valve when the seat of the pan isvlovvered, Water supply meansfor supplyingr Water to said casing when said valve is opened, and a discharge tube connected to said casing and to said outlet pipe and through rwhich the Watery ti'ows from said casing to create asuction in said outlet ipe; y y n l p 2. A device for automatically Ventilating the interior? of a closet pan comprising in combination -wi-th a pan having a discharge Siphon communicating with ther bottom thereof, an annular water supply atthe top thereof and a seat'hinged thereto, of a boss `moulded integral With the pan and having the inner -Walls thereof tangential to the innei' surface of the pan, a second bloss Vformed on said panfa piston cylinder in said second boss, a pistonnmounted in said cylinder, a

piston rod on said piston, a valve cariied by said piston rod,` a valve casing having a seat forsaid valve, a spring acting on said piston i "and adapted normally to h old thevalve closed against itsjseat, a Water supply pipecommunicating with said valve casing, a tube communicating with theV Siphon, a second tube leading from the first boss to the` first named tube, a third tube communicating` with the valve chamber, said third tube having a reduced :portion Whichlenters the said first named tube adjacent the point of connectionof the said second tube therewith i and means -whereby the` val-ve is e opened when the seat is lowered. i i l 3. A device for automatically 4,Ventilating theinterior of a closet pan comprising in Y thefinner wa] combination with a pan having a discharge si-phoir communicating with the bottom thereof, an annular lvvater'supply at ythe top p thereof and a seat hinged thereto, of a boss `moulded!inte ral Withftlie pan andhaving if thereof? tangential to the in` nel' Surface of the pan,a second boss formed on said pan, a piston cylinderrin said second boss, a piston mounted in saidV cylinder, a piston rod on said piston, a 'valve carriedy by said piston rod, a valve casing having a seat for said valve, a 'spring actingV on saidpiston and adapted normally to hold` the valve closed `against its seat, a Water supply pipe communicating VWith said valve casing, a

tube communicating with .thesiphom a `second tube leading `from the first boss to the first named tube, a third tube communicat- M ing with the valve chamber,` said third tube i having` a reduced portion whichenters the said rstnamed tube adjacent the pointot connection of. the said second tube therevvitli f and a projection on the seat, said projection,

when the seat is lowered, being adapted to depresstlie piston against the action of the spring so as to open thevalvmwhereby Wlt-er rushes past the valve and by reasonof the reduced portion of said third tube produces a suction action in said second tube whereby the gases are Withdrawn fromthe pan and discharged into the Siphon, Wherenormally holding said valve closed, means` adapted .to open said valve when the seat-of the pan is lowered, meanswhereby when the valve is opened a suction action is produced in the boss so as to withdraw the gases from.

the pan, means for conveying said gases to said Siphon, and means whereby the suction Y action @an be dlutd, Saidmeans consisting 0f a valve mounted -pnthe ,water suppiy Pipe` i e SYLVAIN 1 REN` HAEAUL'I 

